Messages in this thread | | | Date | Tue, 22 Sep 2009 13:38:07 +0300 | From | "Michael S. Tsirkin" <> | Subject | Re: [RFC] Virtual Machine Device Queues(VMDq) support on KVM |
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On Mon, Sep 21, 2009 at 09:27:18AM -0700, Chris Wright wrote: > * Stephen Hemminger (shemminger@vyatta.com) wrote: > > On Mon, 21 Sep 2009 16:37:22 +0930 > > Rusty Russell <rusty@rustcorp.com.au> wrote: > > > > > > > Actually this framework can apply to traditional network adapters which have > > > > > just one tx/rx queue pair. And applications using the same user/kernel interface > > > > > can utilize this framework to send/receive network traffic directly thru a tx/rx > > > > > queue pair in a network adapter. > > > > > > > > > More importantly, when virtualizations is used with multi-queue > > NIC's the virtio-net NIC is a single CPU bottleneck. The virtio-net > > NIC should preserve the parallelism (lock free) using multiple > > receive/transmit queues. The number of queues should equal the > > number of CPUs. > > Yup, multiqueue virtio is on todo list ;-) > > thanks, > -chris
Note we'll need multiqueue tap for that to help.
-- MST
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